51543120 has 40 divisors (see below), whose sum is σ = 159784416. Its totient is φ = 13744768.

The previous prime is 51543119. The next prime is 51543127. The reversal of 51543120 is 2134515.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51543127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107142 + ... + 107621.

Almost surely, 2^51543120 is an apocalyptic number.

It is an amenable number.

51543120 is an abundant number, since it is smaller than the sum of its proper divisors (108241296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51543120 is a wasteful number, since it uses less digits than its factorization.

51543120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214779 (or 214773 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 51543120 is about 7179.3537313605. The cubic root of 51543120 is about 372.1547512005.

Adding to 51543120 its reverse (2134515), we get a palindrome (53677635).

The spelling of 51543120 in words is "fifty-one million, five hundred forty-three thousand, one hundred twenty".